ctucx.git: nimgit

update implemented.txt

diff --git a/implemented.txt b/implemented.txt
@@ -29,6 +29,11 @@ commit.nim             parentId                       git_commit_parent_id
 commit.nim             parent                         git_commit_parent
 commit.nim             treeId                         git_commit_tree_id
 commit.nim             tree                           git_commit_tree
+Missing: git_commit_lookup_prefix, git_commit_committer_with_mailmap,
+git_commit_author_with_mailmap, git_commit_nth_gen_ancestor, git_commit_header_field,
+git_commit_create, git_commit_create_v, git_commit_amend, git_commit_create_buffer
+git_commit_create_with_signature, git_commit_dup
+
 
 free.nim               free                           git_repository_free
 free.nim               free                           git_reference_free